R help - Aug 2004 - cell counting in R

I have a bunch of jpg files that I need to count cells on.  Some cells are green
and some cells are red.  Is there a function like locator that I could use to
manually count the cells?  I would like to be able to click on a cell, have it
marked so I don't count it again and have a counter keep track.  Locator
comes close but I would only be able to count one colour at a time.  Is there a
way I can do this in R?

Thanks,
Doug

You might find it easier to do this type of thing with an open-source image
analysis program such as ImageJ: http://rsb.info.nih.gov/ij/

Rob


----- Original Message ----- 
From: "Doug Bourne" <bournephysio at shaw.ca>
To: <r-help at stat.math.ethz.ch>
Sent: Friday, August 13, 2004 1:10 PM
Subject: [R] cell counting in R

> I have a bunch of jpg files that I need to count cells on.  Some cells are
green and some cells are red.  Is there a function like locator that I could
use to manually count the cells?  I would like to be able to click on a
cell, have it marked so I don't count it again and have a counter keep
track.  Locator comes close but I would only be able to count one colour at
a time.  Is there a way I can do this in R?
>
> Thanks,
> Doug
>
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